A = {x | x ≤ - 3 or X > 0} B = {x | - 4 < x ≤ 1} u = R find anb (CUA) UB an (cub) (CuA)U(CuB) Cu(AUB)
AnB=(-4,-3]U(0,1]
(CuA) UB=(-4,1]
An (cub) = (- infinity, - 3] U (0, + infinity)
(CUA) U (cub) = Cu (anb) = (- infinity, - 4] U (- 3,0] U (1, + infinity)
Cu(AUB)=∅
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